I don't know mixed reviews here's Keltec http://www.keltecweapons.com/our-guns/rfb/rifle/ http://ingunowners.com/forums/ingo-real-world-reviews/144333-review-keltec-rfb.html http://www.americanrifleman.org/ArticlePage.aspx?id=1972&cid=4 There was one guy said BCG failed on him,but CS was good.I can't find that one.